Joseph behm



(No Model.)

J BEHM V ORB SEPARATOR AND OONGENTRATOR.

No. 320,998; Patented June 30, 1885.

UNITED STATES JOSEPH BEHM, or sA PATENT OFFICEQ N JOSE, CALIFORNIA.

ORE SEPARATOR AND CONCENTRATOR.

SPEC'IFICATZON forming part of Letters Patent No. 320,998, dated June30, 1885.

Application filed Janu To all whom it may concern:

Be it known that I, J osnrn BEHM, of the city of San J os, Santa Claracounty, State of California, have invented Improvements in OreSeparators and Concentrators; and I hereby declare the following to be afull, clear, and exact description of the same.

My invention relates'to an apparatus which is especially adapted for theseparation of the more valuable portion of ores or minerals from theirgangue after they have been pulverized, and in the concentration of thematerial, as will be more fully described, claimed, and explained byreference to the accompanying drawing, in which the figure represents alongitudinal vertical section of my apparatus.

A is a hopper, into which the ore is first received after having beenpulverized to a sufficient degree of fineness. From this hopper itpasses downward through an inclined passage and is discharged into avertical cylindrical chamber, 13, through which a vertical shaftextends, having a step and journal-box at bottom and top, respectively,and a suitable driving-gear, as shown. Upon this shaft is fixed a disk,0, just below the open end of the cylinder B. The rapid revolution ofthis shaft and disk 0 causes the pulverized material to be thrownoutward within the larger inclosing-cylinder D, the finest portion ofthe dust being drawn upward and over the upper I end of the cylinder Dby a suction-fan, as will be hereinafter described, while the heavierportions will fall into a hopper, a, beneath the open bottom of thecylinder D, and may dis charge outward by a spout, b, in its lower end.The disk 0 has an inclosing-sleeve,'c, where it passes up through thecylinder B, and this protects the shaft from the wear and attrition ofthe material, which is fed into the cylinder around it. A second sleeve,d, also surrounds the shaft where it passes through the hopper a, thissleeve being secured to the hopper, as shown. The step 6, within whichthe vertical shaft is supported, is fixed to a leverarm, f, and this maybe raised or depressed by a screw, or by other suitable device, so as toregulate the distance between the disk 0 and the bottom of the cylinderB, and thus control the discharge of the material from this cylinder.

ary 24, 1885. (No model.)

The fine dust is drawn upward over the top of the cylinder D by asuction-fan, E, which is situated at the end of a passage which has aseries of hoppers or chambers formed in it at F, G, and H. Thesepassages may also be provided with inclined diaphragms G H, which serveto prevent the air and dust from passing in a direct line to the fan.The dia phragms divert the current downward, so that any material whichis heavy enough will be retained in the chambers. These chambers aregraduated in size, those nearest the inlet being made smaller than thosewhich are more distant, in order to produce a stronger current throughthem at this point. This is necessary by reason of the greater specificgravity of the ore which is deposited in the first chambers, and thestrength of the air-draft lessens toward the 1 outlet as the chamber in-70 creases in size, the deposited material being lighter.

The material which is deposited in the different chambers may escapeautomatically through doors or valves at the bottoms, which may be keptclosed by springs or weights until the weight of the material withinovercomes the springs, when it discharges, after which the doors areagain closed.

The finest portion of the dust is carried 80 through the fan-case Eand-is discharged into a large dust-chamber, I, from which it may alsobe withdrawn through suitable openings at the bottom. From the top ofthis dust-chamber a pipe or passage, J, connects with anothersuction-fan,K. This passage is in the form of an inverted cone orpyramid having its base connecting with the top of the chamber I, andthe opening is covered with a fabric of some fibrous material, which,while allowing the air to escape, will arrest any dust which may bedrawn upward by the action of the fan K. The material thus arrested inthe chambers F, G, and H may be further concentrated by being dischargedfrom these chambers into a second apparatus, which operates in the samemanner as the one here described.

By this construction I "am enabled to graduate the ore in fineness andseparate it into as many grades as may be desired, all that is too 100coarse for further operations being again returned to a pulverizer.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is v 1. An ore'concentrator comprising aninner vertical open-ended cylinder, a shaft 6X- tending through it, adistributing-disk upon said shaft, a protecting sleeve upon the disk, anouter concentric cylinder with open ends to admit of a current of airpassing through it, a hopper beneath said cylinder into which thecoarser material may fall, and a sleeve on the hopper for protecting theshaft, substantially as herein described.

2. The herein-described separator and con-- centrator, compri ing theconcentric vertical open-ended cylinders, rotating distributingdisk, andsuccessive chambers or receptacles with their diaphragms, the fanbywhich the draft through the chambers is produced, a

dust-chamber into which said fan discharges 20 having adischarge-opening from its upper side, a second suction-fan, and acovering of fibrous material placed over said dischargeopening,substantially as herein described.

In Witness whereof I have hereunto set my 2 5 JOSEPH BEHM.

hand.

Witnesses:

S. H. NoURsE, H. 0. LEE.

